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X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Dec 2025 05:00:05.2207 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: UoLroBumN8aSt10o17A6DXxC7XUw84nnL9bd+Rqr2WyprFzYTpG4JebL5lLMRysKktpgYDUvsbc7OVM/26vWQw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR11MB8535 X-OriginatorOrg: intel.com Hello, kernel test robot noticed a 52.4% regression of pts.schbench.32.usec,_99.9th_latency_percentile on: commit: 089d84203ad42bc8fd6dbf41683e162ac6e848cd ("sched/fair: Fold the sched_avg update") https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git sched/core testcase: pts config: x86_64-rhel-9.4 compiler: gcc-14 test machine: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz (Cascade Lake) with 512G memory parameters: test: schbench-1.1.0 option_a: 32 option_b: 2 cpufreq_governor: performance In addition to that, the commit also has significant impact on the following tests: +------------------+-----------------------------------------------------------------------------------------------+ | testcase: change | pts: pts.stress-ng.Semaphores.bogo_ops_s 17.0% improvement | | test machine | 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz (Cascade Lake) with 512G memory | | test parameters | cpufreq_governor=performance | | | option_a=Semaphores | | | test=stress-ng-1.11.0 | +------------------+-----------------------------------------------------------------------------------------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202512181208.753b9f6e-lkp@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20251218/202512181208.753b9f6e-lkp@intel.com ========================================================================================= compiler/cpufreq_governor/kconfig/option_a/option_b/rootfs/tbox_group/test/testcase: gcc-14/performance/x86_64-rhel-9.4/32/2/debian-12-x86_64-phoronix/lkp-csl-2sp7/schbench-1.1.0/pts commit: 38a68b982d (": Add the __signed_scalar_typeof() helper") 089d84203a ("sched/fair: Fold the sched_avg update") 38a68b982dd0b10e 089d84203ad42bc8fd6dbf41683 ---------------- --------------------------- %stddev %change %stddev \ | \ 22925 -8.7% 20922 vmstat.system.cs 9350 ± 3% +66.2% 15536 pts.schbench.32.usec,_50.0th_latency_percentile 15508 ± 2% +68.7% 26163 pts.schbench.32.usec,_75.0th_latency_percentile 21587 ± 2% +66.3% 35891 pts.schbench.32.usec,_90.0th_latency_percentile 45209 ± 8% +52.4% 68896 ± 2% pts.schbench.32.usec,_99.9th_latency_percentile 836593 -13.5% 723826 pts.time.involuntary_context_switches 263006 -5.9% 247368 pts.time.voluntary_context_switches 19.44 ± 9% -1.9 17.56 ± 10% perf-stat.i.cache-miss-rate% 23851 -10.1% 21445 perf-stat.i.context-switches 2482 ± 3% +55.0% 3848 perf-stat.i.cpu-migrations 58297 ± 6% +22.2% 71251 ± 5% perf-stat.i.cycles-between-cache-misses 4.28 +1.9% 4.37 perf-stat.i.major-faults 459621 ± 4% -10.2% 412737 ± 6% perf-stat.i.node-load-misses 59.21 ± 2% -3.7 55.48 ± 3% perf-stat.i.node-store-miss-rate% 23548 -9.1% 21411 perf-stat.ps.context-switches 2453 ± 3% +57.1% 3853 perf-stat.ps.cpu-migrations 451933 ± 4% -10.2% 405766 ± 6% perf-stat.ps.node-load-misses 3.80 ±101% -2.4 1.37 ±158% perf-profile.calltrace.cycles-pp.shmem_alloc_and_add_folio.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter 3.80 ±101% -2.4 1.37 ±158% perf-profile.calltrace.cycles-pp.shmem_get_folio_gfp.shmem_write_begin.generic_perform_write.shmem_file_write_iter.vfs_write 3.80 ±101% -2.4 1.37 ±158% perf-profile.calltrace.cycles-pp.shmem_write_begin.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write 5.04 ± 89% -2.2 2.88 ±136% perf-profile.calltrace.cycles-pp.__x64_sys_exit_group.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe 5.04 ± 89% -2.2 2.88 ±136% perf-profile.calltrace.cycles-pp.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call.do_syscall_64 5.04 ± 89% -2.2 2.88 ±136% perf-profile.calltrace.cycles-pp.do_group_exit.__x64_sys_exit_group.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe 5.04 ± 89% -2.2 2.88 ±136% perf-profile.calltrace.cycles-pp.x64_sys_call.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.80 ±101% -2.4 1.37 ±158% perf-profile.children.cycles-pp.shmem_alloc_and_add_folio 3.80 ±101% -2.4 1.37 ±158% perf-profile.children.cycles-pp.shmem_get_folio_gfp 3.80 ±101% -2.4 1.37 ±158% perf-profile.children.cycles-pp.shmem_write_begin 5.04 ± 89% -2.2 2.88 ±136% perf-profile.children.cycles-pp.__x64_sys_exit_group 5.04 ± 89% -2.2 2.88 ±136% perf-profile.children.cycles-pp.x64_sys_call 3398 ± 14% +45.6% 4947 ± 16% sched_debug.cfs_rq:/.avg_vruntime.stddev 10.87 ± 38% +268.9% 40.11 ± 40% sched_debug.cfs_rq:/.load_avg.avg 195.51 ± 8% -32.1% 132.77 ± 19% sched_debug.cfs_rq:/.runnable_avg.avg 195.49 ± 8% -32.1% 132.67 ± 19% sched_debug.cfs_rq:/.util_avg.avg 16931 ± 18% +59.7% 27048 ± 19% sched_debug.cfs_rq:/.zero_vruntime.max 2742 ± 11% +48.8% 4080 ± 9% sched_debug.cfs_rq:/.zero_vruntime.stddev 9.71 ± 10% +1542.6% 159.44 ± 41% sched_debug.cfs_rq:/system.slice.load_avg.avg 49.20 ± 29% +1273.6% 675.80 ± 24% sched_debug.cfs_rq:/system.slice.load_avg.max 10.96 ± 9% +1016.0% 122.30 ± 26% sched_debug.cfs_rq:/system.slice.load_avg.stddev 230.81 ± 9% -33.2% 154.14 ± 20% sched_debug.cfs_rq:/system.slice.runnable_avg.avg 8.42 ± 49% -55.9% 3.71 ± 14% sched_debug.cfs_rq:/system.slice.se->avg.load_avg.avg 180.50 ± 57% -79.6% 36.90 ± 46% sched_debug.cfs_rq:/system.slice.se->avg.load_avg.max 22.27 ± 48% -71.5% 6.34 ± 22% sched_debug.cfs_rq:/system.slice.se->avg.load_avg.stddev 230.83 ± 9% -33.3% 153.85 ± 20% sched_debug.cfs_rq:/system.slice.se->avg.runnable_avg.avg 230.83 ± 9% -33.4% 153.79 ± 20% sched_debug.cfs_rq:/system.slice.se->avg.util_avg.avg 3241 ± 31% -81.3% 607.00 ± 25% sched_debug.cfs_rq:/system.slice.se->load.weight.min 1893 ± 40% +627.5% 13772 ± 35% sched_debug.cfs_rq:/system.slice.tg_load_avg.avg 2803 ± 30% +556.7% 18406 ± 25% sched_debug.cfs_rq:/system.slice.tg_load_avg.max 1715 ± 44% +604.5% 12086 ± 37% sched_debug.cfs_rq:/system.slice.tg_load_avg.min 231.68 ± 59% +643.9% 1723 ± 29% sched_debug.cfs_rq:/system.slice.tg_load_avg.stddev 22.27 ± 41% +641.4% 165.13 ± 38% sched_debug.cfs_rq:/system.slice.tg_load_avg_contrib.avg 230.81 ± 9% -33.2% 154.07 ± 20% sched_debug.cfs_rq:/system.slice.util_avg.avg 0.03 ± 33% -51.4% 0.02 ± 24% perf-sched.sch_delay.avg.ms.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 0.00 ± 31% +569.0% 0.03 ± 27% perf-sched.sch_delay.avg.ms.futex_do_wait.__futex_wait.futex_wait.do_futex.__x64_sys_futex 0.24 ± 18% +43.3% 0.34 ± 7% perf-sched.sch_delay.avg.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown] 0.24 ± 17% +40.8% 0.34 ± 5% perf-sched.sch_delay.avg.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown] 0.01 ± 13% +313.3% 0.04 ± 25% perf-sched.sch_delay.avg.ms.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.do_epoll_pwait.part 25.39 ± 24% +103.1% 51.58 ± 35% perf-sched.sch_delay.max.ms.futex_do_wait.__futex_wait.futex_wait.do_futex.__x64_sys_futex 42.11 ± 55% +115.8% 90.86 ± 40% perf-sched.sch_delay.max.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown] 36.90 ± 8% +134.0% 86.33 ± 35% perf-sched.sch_delay.max.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown] 29.57 ± 17% +94.8% 57.62 ± 46% perf-sched.sch_delay.max.ms.irqentry_exit.asm_sysvec_reschedule_ipi.[unknown] 27.31 ± 18% +98.5% 54.21 ± 49% perf-sched.sch_delay.max.ms.irqentry_exit.asm_sysvec_reschedule_ipi.[unknown].[unknown] 1.28 ± 54% +617.0% 9.21 ± 82% perf-sched.sch_delay.max.ms.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.do_epoll_pwait.part 0.15 ± 15% +30.9% 0.20 ± 5% perf-sched.total_sch_delay.average.ms 24.08 ± 3% +12.1% 27.00 perf-sched.total_wait_and_delay.average.ms 23.93 ± 3% +12.0% 26.80 perf-sched.total_wait_time.average.ms 12.02 ± 8% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 8.86 ± 9% -33.9% 5.86 ± 3% perf-sched.wait_and_delay.avg.ms.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 9.27 ± 6% +37.9% 12.79 ± 5% perf-sched.wait_and_delay.avg.ms.futex_do_wait.__futex_wait.futex_wait.do_futex.__x64_sys_futex 23.08 ± 2% +19.1% 27.49 ± 2% perf-sched.wait_and_delay.avg.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown] 23.25 ± 2% +18.7% 27.60 perf-sched.wait_and_delay.avg.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown] 24.82 ± 11% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.irqentry_exit.asm_sysvec_call_function_single.[unknown] 24.47 ± 12% -100.0% 0.00 perf-sched.wait_and_delay.avg.ms.irqentry_exit.asm_sysvec_call_function_single.[unknown].[unknown] 27.22 ± 7% +14.8% 31.24 ± 2% perf-sched.wait_and_delay.avg.ms.irqentry_exit.asm_sysvec_reschedule_ipi.[unknown] 27.68 ± 7% +14.5% 31.70 ± 2% perf-sched.wait_and_delay.avg.ms.irqentry_exit.asm_sysvec_reschedule_ipi.[unknown].[unknown] 561.21 +15.2% 646.76 perf-sched.wait_and_delay.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm 1151 ± 3% -100.0% 0.00 perf-sched.wait_and_delay.count.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 9330 ± 12% +85.2% 17277 ± 3% perf-sched.wait_and_delay.count.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 49629 ± 5% -15.4% 41983 ± 3% perf-sched.wait_and_delay.count.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown] 48187 ± 5% -15.4% 40747 ± 3% perf-sched.wait_and_delay.count.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown] 4019 ± 8% -100.0% 0.00 perf-sched.wait_and_delay.count.irqentry_exit.asm_sysvec_call_function_single.[unknown] 3792 ± 7% -100.0% 0.00 perf-sched.wait_and_delay.count.irqentry_exit.asm_sysvec_call_function_single.[unknown].[unknown] 10992 ± 4% -9.9% 9903 ± 2% perf-sched.wait_and_delay.count.irqentry_exit.asm_sysvec_reschedule_ipi.[unknown] 183.81 ±149% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 150.43 ± 9% +39.7% 210.17 ± 4% perf-sched.wait_and_delay.max.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown] 138.97 ± 7% +48.9% 206.98 ± 6% perf-sched.wait_and_delay.max.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown] 120.74 ± 6% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.irqentry_exit.asm_sysvec_call_function_single.[unknown] 117.76 ± 7% -100.0% 0.00 perf-sched.wait_and_delay.max.ms.irqentry_exit.asm_sysvec_call_function_single.[unknown].[unknown] 1.04 ± 31% -71.6% 0.29 ± 44% perf-sched.wait_time.avg.ms.__cond_resched.dput.part.0.__fput 8.83 ± 8% -33.9% 5.84 ± 3% perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 9.27 ± 6% +37.7% 12.76 ± 5% perf-sched.wait_time.avg.ms.futex_do_wait.__futex_wait.futex_wait.do_futex.__x64_sys_futex 22.84 ± 2% +18.9% 27.15 ± 2% perf-sched.wait_time.avg.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown] 23.01 +18.5% 27.26 perf-sched.wait_time.avg.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown] 27.09 ± 7% +14.7% 31.07 ± 2% perf-sched.wait_time.avg.ms.irqentry_exit.asm_sysvec_reschedule_ipi.[unknown] 27.55 ± 7% +14.5% 31.53 ± 2% perf-sched.wait_time.avg.ms.irqentry_exit.asm_sysvec_reschedule_ipi.[unknown].[unknown] 561.20 +15.2% 646.75 perf-sched.wait_time.avg.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm 131.24 ± 9% +37.8% 180.91 ± 6% perf-sched.wait_time.max.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown] 128.37 ± 7% +41.2% 181.24 ± 7% perf-sched.wait_time.max.ms.irqentry_exit.asm_sysvec_apic_timer_interrupt.[unknown].[unknown] 115.53 ± 7% +17.9% 136.21 ± 7% perf-sched.wait_time.max.ms.irqentry_exit.asm_sysvec_call_function_single.[unknown] 112.57 ± 5% +47.8% 166.40 ± 67% perf-sched.wait_time.max.ms.irqentry_exit.asm_sysvec_call_function_single.[unknown].[unknown] 7.69 ± 33% +6561.5% 512.09 ±234% perf-sched.wait_time.max.ms.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.do_epoll_pwait.part *************************************************************************************************** lkp-csl-2sp7: 96 threads 2 sockets Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz (Cascade Lake) with 512G memory ========================================================================================= compiler/cpufreq_governor/kconfig/option_a/rootfs/tbox_group/test/testcase: gcc-14/performance/x86_64-rhel-9.4/Semaphores/debian-12-x86_64-phoronix/lkp-csl-2sp7/stress-ng-1.11.0/pts commit: 38a68b982d (": Add the __signed_scalar_typeof() helper") 089d84203a ("sched/fair: Fold the sched_avg update") 38a68b982dd0b10e 089d84203ad42bc8fd6dbf41683 ---------------- --------------------------- %stddev %change %stddev \ | \ 0.94 ± 12% +0.1 1.05 ± 11% mpstat.cpu.all.irq% 22175775 ± 2% -29.7% 15587298 ± 2% vmstat.system.cs 43933492 +17.0% 51381109 pts.stress-ng.Semaphores.bogo_ops_s 1.201e+09 -29.9% 8.415e+08 ± 2% pts.time.involuntary_context_switches 2047 -2.8% 1990 pts.time.system_time 774.22 +6.9% 827.70 pts.time.user_time 18302 ± 19% +182.0% 51617 ± 19% pts.time.voluntary_context_switches 1.385e+08 +9.9% 1.522e+08 perf-stat.i.branch-misses 23793135 ± 2% -29.7% 16716565 ± 2% perf-stat.i.context-switches 165.66 ± 4% +49.0% 246.91 perf-stat.i.cpu-migrations 2.678e+10 -3.7% 2.58e+10 perf-stat.i.dTLB-loads 1.557e+10 -3.4% 1.504e+10 perf-stat.i.dTLB-stores 21025195 +24.2% 26111221 ± 2% perf-stat.i.iTLB-load-misses 1.017e+11 -2.9% 9.874e+10 perf-stat.i.instructions 32500 ± 30% -51.7% 15693 ± 10% perf-stat.i.instructions-per-iTLB-miss 686.98 -2.6% 668.88 perf-stat.i.metric.M/sec 0.59 +0.1 0.65 perf-stat.overall.branch-miss-rate% 1.50 +3.9% 1.56 perf-stat.overall.cpi 4831 ± 2% -21.8% 3780 ± 2% perf-stat.overall.instructions-per-iTLB-miss 0.67 -3.8% 0.64 perf-stat.overall.ipc 1.358e+08 +9.9% 1.493e+08 perf-stat.ps.branch-misses 23332701 ± 2% -29.7% 16391899 ± 2% perf-stat.ps.context-switches 162.46 ± 4% +49.1% 242.15 perf-stat.ps.cpu-migrations 2.627e+10 -3.7% 2.53e+10 perf-stat.ps.dTLB-loads 1.527e+10 -3.4% 1.475e+10 perf-stat.ps.dTLB-stores 20659015 +24.1% 25643823 ± 2% perf-stat.ps.iTLB-load-misses 9.977e+10 -2.9% 9.686e+10 perf-stat.ps.instructions 5.136e+12 -3.2% 4.973e+12 perf-stat.total.instructions 6.19 ±141% +614.4% 44.23 ± 67% perf-sched.sch_delay.avg.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call 3.01 ±222% +936.1% 31.16 ± 92% perf-sched.sch_delay.avg.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 4.75 ± 67% -89.4% 0.50 ± 88% perf-sched.sch_delay.avg.ms.futex_do_wait.__futex_wait.futex_wait.do_futex.__x64_sys_futex 0.01 ± 14% +25.7% 0.01 ± 19% perf-sched.sch_delay.avg.ms.irq_wait_for_interrupt.irq_thread.kthread.ret_from_fork.ret_from_fork_asm 27.62 ±134% -97.8% 0.60 ±219% perf-sched.sch_delay.avg.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm 4.19 ±217% +514.4% 25.74 ±112% perf-sched.sch_delay.avg.ms.schedule_timeout.__wait_for_common.wait_for_completion_state.kernel_clone.__x64_sys_vfork 122.79 ± 13% +312.2% 506.13 ± 32% perf-sched.sch_delay.max.ms.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 2181 ± 41% -38.5% 1340 ± 35% perf-sched.sch_delay.max.ms.anon_pipe_read.fifo_pipe_read.vfs_read.ksys_read.do_syscall_64 2680 ± 41% -62.5% 1004 ± 99% perf-sched.sch_delay.max.ms.anon_pipe_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 333.74 ±141% +199.8% 1000 perf-sched.sch_delay.max.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call 167.85 ±223% +598.7% 1172 ± 76% perf-sched.sch_delay.max.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 245.85 ±130% -97.6% 5.86 ±222% perf-sched.sch_delay.max.ms.rcu_gp_kthread.kthread.ret_from_fork.ret_from_fork_asm 0.05 ± 5% +52.0% 0.08 ± 2% perf-sched.total_wait_and_delay.average.ms 20881143 ± 3% -32.1% 14170213 ± 2% perf-sched.total_wait_and_delay.count.ms 0.05 ± 4% +52.8% 0.08 ± 3% perf-sched.total_wait_time.average.ms 0.02 ± 3% +56.0% 0.04 ± 2% perf-sched.wait_and_delay.avg.ms.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 9.51 ±209% +745.8% 80.40 ± 54% perf-sched.wait_and_delay.avg.ms.do_wait.kernel_wait4.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 30.35 ± 50% -71.3% 8.70 ± 28% perf-sched.wait_and_delay.avg.ms.futex_do_wait.__futex_wait.futex_wait.do_futex.__x64_sys_futex 20874873 ± 3% -32.2% 14163492 ± 2% perf-sched.wait_and_delay.count.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 165.00 ± 90% +378.6% 789.67 ± 30% perf-sched.wait_and_delay.count.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 382.50 ± 28% +91.8% 733.67 ± 12% perf-sched.wait_and_delay.count.futex_do_wait.__futex_wait.futex_wait.do_futex.__x64_sys_futex 503.33 ± 49% +105.4% 1033 ± 24% perf-sched.wait_and_delay.count.schedule_hrtimeout_range_clock.ep_poll.do_epoll_wait.do_epoll_pwait.part 85.17 ± 24% +85.3% 157.83 ± 28% perf-sched.wait_and_delay.count.schedule_timeout.rcu_gp_fqs_loop.rcu_gp_kthread.kthread.ret_from_fork 514.37 ± 18% +192.2% 1502 ± 24% perf-sched.wait_and_delay.max.ms.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 5701 ± 19% -32.4% 3852 ± 23% perf-sched.wait_and_delay.max.ms.anon_pipe_read.fifo_pipe_read.vfs_read.ksys_read.do_syscall_64 5530 ± 34% -45.5% 3015 ± 47% perf-sched.wait_and_delay.max.ms.anon_pipe_read.vfs_read.ksys_read.do_syscall_64.entry_SYSCALL_64_after_hwframe 0.01 ± 18% +230.2% 0.05 ± 86% perf-sched.wait_time.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write 0.02 ± 3% +55.3% 0.04 ± 2% perf-sched.wait_time.avg.ms.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 0.01 ± 18% +56.3% 0.02 ± 26% perf-sched.wait_time.avg.ms.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 25.61 ± 50% -68.0% 8.20 ± 26% perf-sched.wait_time.avg.ms.futex_do_wait.__futex_wait.futex_wait.do_futex.__x64_sys_futex 489.21 ± 21% +171.2% 1326 ± 28% perf-sched.wait_time.max.ms.__x64_sys_sched_yield.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown].[unknown] 1185 ± 26% -15.6% 1000 perf-sched.wait_time.max.ms.do_task_dead.do_exit.do_group_exit.__x64_sys_exit_group.x64_sys_call 0.02 ± 20% +300.7% 0.10 ± 98% perf-sched.wait_time.max.ms.exit_to_user_mode_loop.do_syscall_64.entry_SYSCALL_64_after_hwframe.[unknown] 1281 ± 10% +37.3% 1759 ± 10% sched_debug.cfs_rq:/.avg_vruntime.avg 3255 ± 16% +39.8% 4549 ± 9% sched_debug.cfs_rq:/.avg_vruntime.stddev 10.24 ± 50% +266.8% 37.54 ± 44% sched_debug.cfs_rq:/.load_avg.avg 1086 ± 13% +41.4% 1536 ± 7% sched_debug.cfs_rq:/.zero_vruntime.avg 16641 ± 20% +71.5% 28532 ± 16% sched_debug.cfs_rq:/.zero_vruntime.max 2628 ± 7% +55.5% 4088 ± 8% sched_debug.cfs_rq:/.zero_vruntime.stddev 9.57 ± 13% +1560.4% 158.98 ± 43% sched_debug.cfs_rq:/system.slice.load_avg.avg 54.00 ± 7% +1167.0% 684.17 ± 40% sched_debug.cfs_rq:/system.slice.load_avg.max 10.89 ± 10% +1043.2% 124.50 ± 39% sched_debug.cfs_rq:/system.slice.load_avg.stddev 3621 ± 24% -82.5% 633.83 ± 25% sched_debug.cfs_rq:/system.slice.se->load.weight.min 1382 ± 10% +38.3% 1912 ± 11% sched_debug.cfs_rq:/system.slice.se->vruntime.avg 3453 ± 15% +39.3% 4812 ± 10% sched_debug.cfs_rq:/system.slice.se->vruntime.stddev 1411 ± 54% +818.0% 12960 ± 38% sched_debug.cfs_rq:/system.slice.tg_load_avg.avg 1983 ± 44% +699.0% 15847 ± 40% sched_debug.cfs_rq:/system.slice.tg_load_avg.max 1244 ± 59% +823.7% 11495 ± 38% sched_debug.cfs_rq:/system.slice.tg_load_avg.min 18.22 ± 45% +791.4% 162.37 ± 41% sched_debug.cfs_rq:/system.slice.tg_load_avg_contrib.avg 0.39 ± 40% +163.4% 1.02 ± 17% sched_debug.cfs_rq:/system.slice/containerd.service.load_avg.avg 1.83 ± 37% +118.2% 4.00 ± 25% sched_debug.cfs_rq:/system.slice/containerd.service.load_avg.max 0.70 ± 33% +111.6% 1.48 ± 17% sched_debug.cfs_rq:/system.slice/containerd.service.load_avg.stddev 0.44 ± 28% +146.7% 1.09 ± 16% sched_debug.cfs_rq:/system.slice/containerd.service.runnable_avg.avg 2.00 ± 28% +108.3% 4.17 ± 25% sched_debug.cfs_rq:/system.slice/containerd.service.runnable_avg.max 0.77 ± 23% +105.5% 1.57 ± 19% sched_debug.cfs_rq:/system.slice/containerd.service.runnable_avg.stddev 0.29 ± 53% +224.9% 0.94 ± 12% sched_debug.cfs_rq:/system.slice/containerd.service.se->avg.load_avg.avg 0.63 ± 54% +119.4% 1.38 ± 28% sched_debug.cfs_rq:/system.slice/containerd.service.se->avg.load_avg.stddev 0.44 ± 28% +135.1% 1.04 ± 18% sched_debug.cfs_rq:/system.slice/containerd.service.se->avg.runnable_avg.avg 2.00 ± 28% +100.0% 4.00 ± 25% sched_debug.cfs_rq:/system.slice/containerd.service.se->avg.runnable_avg.max 0.77 ± 23% +95.4% 1.50 ± 18% sched_debug.cfs_rq:/system.slice/containerd.service.se->avg.runnable_avg.stddev 0.44 ± 28% +135.1% 1.04 ± 18% sched_debug.cfs_rq:/system.slice/containerd.service.se->avg.util_avg.avg 2.00 ± 28% +100.0% 4.00 ± 25% sched_debug.cfs_rq:/system.slice/containerd.service.se->avg.util_avg.max 0.77 ± 23% +95.4% 1.50 ± 18% sched_debug.cfs_rq:/system.slice/containerd.service.se->avg.util_avg.stddev 2.50 ± 47% +133.5% 5.83 ± 28% sched_debug.cfs_rq:/system.slice/containerd.service.tg_load_avg.avg 3.00 ± 50% +105.6% 6.17 ± 28% sched_debug.cfs_rq:/system.slice/containerd.service.tg_load_avg.max 2.17 ± 49% +161.5% 5.67 ± 29% sched_debug.cfs_rq:/system.slice/containerd.service.tg_load_avg.min 0.39 ± 40% +163.4% 1.02 ± 17% sched_debug.cfs_rq:/system.slice/containerd.service.tg_load_avg_contrib.avg 1.83 ± 37% +118.2% 4.00 ± 25% sched_debug.cfs_rq:/system.slice/containerd.service.tg_load_avg_contrib.max 0.70 ± 33% +111.6% 1.48 ± 17% sched_debug.cfs_rq:/system.slice/containerd.service.tg_load_avg_contrib.stddev 0.44 ± 28% +146.7% 1.09 ± 16% sched_debug.cfs_rq:/system.slice/containerd.service.util_avg.avg 2.00 ± 28% +108.3% 4.17 ± 25% sched_debug.cfs_rq:/system.slice/containerd.service.util_avg.max 0.77 ± 23% +105.5% 1.57 ± 19% sched_debug.cfs_rq:/system.slice/containerd.service.util_avg.stddev 7.74 ± 3% -39.7% 4.67 ± 35% sched_debug.cpu.clock.stddev 1495 ± 4% +8.4% 1620 ± 5% sched_debug.cpu.nr_switches.avg Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki